Starting at $13,278.00
  • Usually ships in 2-3 weeks



  • Accurate to ±0.11°C using the external reference sensor
  • 4-wire True-Ohm-Measurement technology
  • Excellent stability: 0.008°C
  • Wide temperature range: 33 to 700°C
  • Unique active triple-zone block for improved temperature homogeneity
  • Dynamic Load Compensation for perfect temperature uniformity in the insert
  • Display indicator for temperature uniformity
  • Intelligent reference sensors hold the calibration data (coefficients) of the reference sensor
  • USB communication
  • High speed heating and cooling times
  • Best performing dry-block with regard to the EURAMET/cg-13/v.01 guideline for testing of dry-blocks


The Ametek Jofra RTC-700 is an advanced reference temperature calibrator that offers high performance along with a full range of features. The Ametek Jofra RTC-700 has a wide temperature range and provides precise temperature calibration of sensors, regardless of type and format, through an innovative triple-zone heating technology.

The Ametek Jofra RTC-700 has a temperature range of 33° to 700°C (91° to 1292°F). The unit has three heating zones, each of which is independently controlled for precise temperature calibrations. The homogeneity of the lower zone is close to that of a laboratory liquid bath. The lower and middle zones ensure optimum heat dissipation throughout the entire calibration zone. The upper zone compensates for heat loss from the sensor- under- test as well as from the open top. This eliminates the need for extra insulation of sensors-under-test and makes it possible to calibrate liquid-filled and other sensors.

The RTC-700 offers a further improvement on this technology with its Dynamic Load Compensation (DLC) sensor which measures the temperature in the calibrator's insert and provides feedback to the active triple-zone system to compensate for the temperature differences resulting from testing various sensors. This allows the RTC-700 to perform highly accurate temperature calibrations without being affected by the size and number of sensors under test. The RTC-700 also offers other innovative features such as intelligent sensors for plug ‘n' play connectivity, an easy-to-read full-color VGA display, and a USB connection for improved communications and software downloads.

The Ametek Jofra RTC-700 reference temperature calibrator is available in three configurations: RTC-A reference temperature calibrator, RTC-B reference temperature calibrator with input for reference sensor, DLC sensor and sensors-under-test, and RTC-C reference temperature calibrator with input for reference sensor and DLC sensor. The RTC-700 can be used without an external reference sensor. However, users will obtain better accuracies and realize the calibrator's full potential by utilizing the STS-200 reference sensor. Both the STS-200 and DLC sensors contain all individual calibration data regarding the sensor, allowing users to change the reference sensor and be up and running immediately.

The RTC-700 features a rugged, lightweight design and inserts that cover most commonly used sensor sizes. A unique design allows the units to calibrate threaded sensors and sensors with connection heads.

The Ametek Jofra RTC-700 (models A, B and C) ships complete with the following:

  • Mains power cable
  • Traceable calibration certificate (temperature performance)
  • Tool for insertion tubes
  • JOFRACAL software
  • USB cable
  • Heat shield
  • Manuals

Model B contains the following extra items:

  • Test cables (2 x red, 2 x black)
  • Traceable certificate (input performance for reference sensor and DLC sensor)
  • Traceable certificate (input performance for sensor-under-test inputs)

Model C contains the following extra items:

  • Traceable certificate (input performance for reference sensor and DLC sensor)

Ametek Jofra RTC-700 Temperature Calibrator Specifications:

Parameter Range
Temperature Range @ 0°C ambient 10 to 700°C
@ 23°C ambient 33 to 700°C
@ 40°C ambient 50 to 700°C
Accuracy With external ref. sensor (models B&C) ±0.11°C
With internal ref. sensor ±0.29°C
Stability @ 33° to 125°C ±0.008°C
@ 125° to 425°C ±0.015°C
@ 425° to 700°C ±0.02°C
Axial Homogeneity (@ 60 mm) @ 33° to 100°C 0.10°C
@ 100° to 420°C 0.25°C
@ 420° to 700°C 0.40°C
Resolution All temperatures 1°, 0.1°, 0.01°, or 0.001°
Heating Time 33° to 700°C 45 minutes
Cooling Time 155 to 100°C 4 minutes
700° to 100°C 43 minutes
100° to 50°C 17 minutes
50° to 33°C 20 minutes
Time to Stability 10 minutes
Immersion Depth 200 mm
Input Specifications RTD reference input See data sheet for complete specifications
DLC sensor input See data sheet for complete specifications
RTD sensor under test See data sheet for complete specifications
Thermocouple input See data sheet for complete specifications
Transmitter Supply Output voltage 24 VDC ±10%
Output current Maximum 28 mA
Transmitter Input mA (B Model) Range 0 to 24 mA
Accuracy (12 months) ±(0.005% rdg + 0.010% F.S.)
Voltage Input VDC (B Model) Range 0 to 12 VDC
Accuracy (12 months) ±(0.005% rdg + 0.010% F.S.)
Switch Input (B Model) Test voltage Maximum 5 VDC
Test current Maximum 2.5 mA
Communications Interface Serial data USB 2.0 device port
Serial data USB 2.0 host double port (for future expansion)
LAN Ethernet MAC 10/100 Base-T (for future expansion)
SD SD slot (for future expansion)
Inserts Outer diameter 29.8 mm
Length 210 mm